Sony has released a new video today in which two Ubisoft employees — Creative Director Jean Guesdon and Associate Producer Sylvain Trottier — discuss development of Assassin's Creed 4: Black Flag for the PlayStation 4. In doing so, they reveal the benefits of what the PS4 will allow for: better visuals, a "connected" single player experience, and a seamless boarding (start a mission on ground, head to sea, and finish on another island without interruption).
Guesdon and Trottier also talk PS4 technical specifications and how each feature of the PS4 enhances AC4 gameplay. While I could sit here and recap everything they say, you're probably better off just hearing it from them. After all, they are the ones who developed on the system.
It should also be noted that this video premiered on the official PlayStation blog, so there probably is a little bias in the tone.